QDKH ​Backward Curved ​Square Duct Blower

The backward curved square duct blower is designed for ventilation and exhausting cooking fumes. The equipment is belt driven and features a simple structure that is easy to maintain. The belt drive cabinet centrifugal fan is configured so as to prevent the motor from ever becoming damaged due to overloading. It is best suited for ventilation, exhausting dust, and exhausting cooking fumes in locations with long ventilation ducts that require high pressure blowers, such as hotels, stadiums, schools, restaurants, movie theaters, and high-rises.

Features The square duct blower is equipped with a backward curved centrifugal fan and is ideal for universal ventilation and exhausting cooking fumes. It is driven by belt and features a simple structure that is easy to maintain. The impeller needs to be maintained regularly. This series of belt drive cabinet centrifugal fans includes ten models (355, 400, 450, 500, 560, 630, 710, 800, 900, and 1000.) Adopting a backward curved impeller with double outlet, it provides high static pressure, high efficiency and good energy saving effects. This series of belt drive cabinet centrifugal fan is specially configured so as to protect the motor from overload damage. Specifications

Model	Power(Kw)	Speed(r/min)	Airflow(㎡/h)	Pressure(Pa)	Noise Db(A)	Outlet
315	0.75	1650	2004-4667	549-325	≤67	404 x 404
	1.1	1860	2259-5261	698-413	≤69
	1.5	2070	2514-5855	865-512	≤72
	2.2	2350	2854-6647	1116-660	≤74
	3	2600	3159-7355	1368-808	≤76
	4	2860	3475-8090	1656-978	≤78
355	1.5	1690	2938-6842	732-433	≤72	452 x 452
	2.2	1920	3339-7774	946-559	≤75
	3	2130	3704-8624	1165-688	≤78
	4	2350	4087-9515	1419-838	≤79
	5.5	2600	4522-10527	1738-1026	≤81
400	2.2	1600	3980-9267	833-493	≤76	506 x 506
	3	1800	4478-10426	1056-624	≤79
	4	1980	4926-11469	1278-756	≤81
	5.5	2200	5473-12742	1580-933	≤83
	7.5	2450	6095-14191	1962-1158	≤85
450	3	1470	5206-12123	891-527	≤78	568 x 568
	4	1620	5738-13360	1082-640	≤80
	5.5	1820	6447-15009	1368-808	≤83
	7.5	2000	7085-16494	1652-976	≤85
	11	2280	8076-18804	12151-1270	≤87
500	4	1370	6657-15499	955-564	≤79	638 x 638
	5.5	1520	7385-17195	1177-696	≤82
	7.5	1690	8212-19119	1456-861	≤84
	11	1910	9280-21607	1862-1099	≤86
	15	2120	10301-23984	2297-1355	≤89
560	5.5	1270	8669-20186	1030-609	≤81	714 x 714
	7.5	1400	9558-22251	1252-740	≤83
	11	1580	10786-25112	1597-943	≤85
	15	1760	12015-27974	1984-1171	≤88
	18.5	1880	12835-29880	2266-1337	≤90
	22	2000	13654-31769	2567-1514	≤91
630	7.5	1150	11178-26025	1068-632	≤82	800 x 800
	11	1300	12636-29419	1368-808	≤85
	15	1450	14095-32814	1703-1005	≤87
	18.5	1550	15066-35077	1947-1149	≤89
	22	1640	15941-37114	2181-1288	≤90
	30	1820	17691-41188	5692-1587	≤92
710	7.5	940	13078-30450	907-536	≤81	900 x 900
	11	1070	14887-34660	1176-695	≤84
	15	1180	16417-38224	1431-846	≤86
	18.5	1270	17670-41139	1659-979	≤88
	22	1340	18643-43407	1848-1092	≤89
	30	1490	20731-48265	2289-1350	≤91
	37	1600	22262-51829	2641-1558	≤93
800	11	800	17515-40778	1009-627	≤83	1000 x 1000
	15	970	19306-44948	1227-725	≤85
	18.5	1040	20699-48192	1411-833	≤87
	22	1100	21894-50973	1580-933	≤88
	30	1220	24282-56534	1945-1148	≤90
	37	1310	26073-60703	2245-1325	≤92
	45	1400	27864-64874	2567-1514	≤94
900	15	800	22671-52783	1056-624	≤85	1120 x 1120
	18.5	850	24089-56081	1192-704	≤87
	22	910	25789-60041	1368-808	≤88
	30	1000	28339-65978	1652-976	≤90
	37	1080	30606-71257	1929-1139	≤92
	45	1150	32590-75876	2190-1292	≤93
1000	18.5	720	27989-65164	1056-624	≤86	1250 x 1250
	22	760	29544-68784	1177-696	≤87
	30	840	32655-76025	1439-850	≤89
	37	900	34987-81455	1652-976	≤91
	45	960	37320-86885	1882-1110	≤92
	55	1030	40040-93221	2168-1279	≤94